All about attach rates. Marc Andreessen took to Twitter on Thursday to explain how to value tech companies. [NYT]

IPOs

Flash Boys fallout. High-frequency trading firm Virtu Financial Inc. has pulled the plug on its initial-public-offering plans for now because of market turbulence and controversy around the release of “Flash Boys,” a book criticizing its industry. [WSJ]

Weibo soars. Shares of Weibo Corp. jumped 19% in their trading debut Thursday, a sharp reversal from the lackluster initial pricing for China’s version of Twitter Inc. [WSJ]

IPO for Monier. Braas Monier Building Group, a supplier of building materials for roofs, is planning an initial public offering in Frankfurt to raise about 500 million euros ($690 million). [Bloomberg]

LendingClub infusion. Online peer-to-peer financing company LendingClub Corp. has raised a fresh round of money valuing it at $3.8 billion, as it completes a major acquisition and moves closer to a potential initial public offering. [WSJ]

Heard on the Street. A stumbling initial-public-offering market should worry tech investors about what else may be coming down the pipe. [WSJ]

Bankruptcy & Distressed Investing

Detroit developments. A federal bankruptcy judge dismissed objections from unions, banks and bond insurers Thursday, largely clearing the way for a vote by creditors on Detroit’s debt-reduction plan in the nation’s largest municipal bankruptcy. [WSJ]

Buyside

Blackstone expects more deals. Blackstone Group LP notched its most profitable first quarter ever, and the private-equity firm’s top executives shrugged off concerns that recent stock-market volatility could interfere with its ability to continue cashing out of deals. [WSJ]